Praseodymium (III) bromide is a binary inorganic compound, a metal salt of praseodymium and hydrobromic acid with the formula PrBr 3 , green crystals, slightly soluble in water, form crystalline hydrates.
| Praseodymium bromide | |
|---|---|
| Are common | |
| Systematic name | Praseodymium bromide (III) |
| Traditional names | Praseodymium bromide |
| Chem. formula | PrBr 3 |
| Physical properties | |
| condition | green crystals |
| Molar mass | 380.62 g / mol |
| Density | 5.28 g / cm³ |
| Thermal properties | |
| T. melt. | 691 [1] ; 693 ° C [2] [3] |
| T. bale. | 1550 [2] [1] ° C |
| Enthalpy of dissolution | 178 kJ / mol [4] |
| Classification | |
| Reg. CAS number | 13536-53-3, 225505-12-4 |
| PubChem | |
| Reg. EINECS number | 236-893-0 |
| Smiles | |
| Inchi | |
| ChemSpider | |
Getting
- The action of bromine vapor on praseodymium [1] :
- Dissolution of praseodymium oxide in hydrobromic acid [4] :
Physical Properties
Praseodymium (III) bromide forms green hygroscopic crystals of hexagonal syngony , space group P 6 3 / m , cell parameters a = 0.792 nm, c = 0.438 nm, Z = 2, uranium trichloride type structure UCl 3 [5] .
At a temperature of 661 ° C, a phase transition occurs in the compound [6] .
Slightly soluble in water [2] .
Forms a crystalline hydrate of the composition PrBr 3 • x H 2 O [4] .
Notes
- ↑ 1 2 3 Guide to inorganic synthesis: In 6 volumes / Ed. Brower G. - M .: Mir, 1985 .-- T. 4 .-- 447 p.
- ↑ 1 2 3 Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
- ↑ CRC Handbook of Chemistry and Physics . - 89th Edition. - Taylor and Francis Group, LLC, 2008-2009.
- ↑ 1 2 3 Yu. V. Goryushkina, AS Monaenkova, AA Popova, LA Tiflova. The enthalpies of formation of praseodymium halides PrCl 3 , PrBr 3 , and PrI 3 in the crystalline state and aqueous solution // Russian Journal of Physical Chemistry. - 2006. - T. 80 , No. 11 . - S. 1710-1713 . - DOI : 10.1134 / S0036024406110021 .
- ↑ Chemist's Handbook / Editorial: Nikolsky B.P. et al. - 2nd ed., rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
- ↑ MF Butman, VB Motalov, LS Kudin, AS Kryuchkov, AE Grishin, KW Krämer. A jump change in the sublimation coefficient of the PrBr 3 single crystal at the polymophic transition point // Russian Journal of Physical Chemistry A, Focus on Chemistry. - 2008. - T. 82 , No. 11 . - S. 1972-1974 . - DOI : 10.1134 / S0036024408110332 .